A Fair-Exchange E-Payment Protocol For Digital Products With Customer Unlinkability

Yen, Yi-Chung; Wu, Tzong‐Chen; Lo, Nai-Wei; Tsai, Kuo-Yu

doi:10.3837/tiis.2012.10.012

Cited by 5 publications

(3 citation statements)

References 26 publications

(34 reference statements)

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“…The primitive e-payment scheme was proposed by Chaum (2013). After this scheme many e-payment schemes were proposed (Chang et al, 2005;Chen et al, 2014;Xiaojun, 2010;Yen et al, 2012;Zhang et al, 2011). We will show that our e-payment scheme is more efficient than the existing epayment schemes.…”

Section: Introductionmentioning

confidence: 80%

Elliptic curve based authenticated encryption scheme and its application for electronic payment system

Kumar

Pal

Yadav

2018

IJCSM

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The use of e-payment system for e-commerce is making our day to day life more easy and convenient. In existing e-payment schemes, there are a number of security and efficiency issues to be addressed. To address such issues Yang et al. (2013) proposed an authenticated encryption scheme and an e-payment system based on this encryption scheme. Their scheme excluded the need of digital signature for authentication. They claimed that the computation costs can be greatly reduced. But recently Chaudhry et al. (2015) exposed the weaknesses of Yang et al.'s (2013) scheme. To overcome the weaknesses of Yang et al.'s (2013) scheme, they proposed improved authenticated encryption and e-payment schemes. However, our analysis shows that there are few security issues in their scheme. Direct use of private key in product with standard key size gives an opportunity to adversary. Based on these observations we propose an improved scheme for authenticated encryption. We also propose e-payment system using our encryption scheme. We give the security proof and performance analysis of our scheme.

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Section: Introductionmentioning

confidence: 80%

Elliptic curve based authenticated encryption scheme and its application for electronic payment system

Kumar

Pal

Yadav

2018

IJCSM

View full text Add to dashboard Cite

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“…The primitive e-payment system was proposed by Chaum [4], after then many e-payment systems are proposed [3,[5][6][7][8][9][10]. While E-commerce is on its way to make daily life more convenient and easy, the main concerns in any e-payment system are security and privacy of participant and contents.…”

Section: Introductionmentioning

confidence: 99%

A secure and efficient authenticated encryption for electronic payment systems using elliptic curve cryptography

Chaudhry

Farash

Naqvi

et al. 2015

Electron Commer Res

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The use of e-payment system for electronic trade is on its way to make daily life more easy and convenient. Contrarily, there are a number of security issues to be addressed, user anonymity and fair exchange have become important concerns along with authentication, confidentiality, integrity and non-repudiation. In a number of existing e-payment schemes, the customer pays for the product before acquiring it. Furthermore, many such schemes require very high computation and communication costs. To address such issues recently Yang et al. proposed an authenticated encryption scheme and an e-payment scheme based on their authenticated encryption. They excluded the need of digital signatures for authentication. Further they claimed their schemes to resist replay, man-in-middle, impersonation and identity theft attack while providing confidentiality, authenticity, integrity and privacy protection. However our analysis exposed that Yang et al.'s both authenticated encryption scheme and e-payment system are vulnerable to impersonation attack. An adversary just having knowledge of public parameters can easily masquerade as a legal user. Furthermore, we proposed improved authenticated encryption and e-payment schemes to overcome weaknesses of Yang et al.'s schemes. We prove the security of our schemes using automated tool ProVerif. The & Mohammad Sabzinejad Farash improved schemes are more robust and more lightweight than Yang et al.'s schemes which is evident from security and performance analysis.

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“…Previously methods build image annotation model based on three basic dependencies: relations between image and label (image/label), between images (image/image) and between labels (label/label). Assuming targets are independent to each other, they managed to establish the relations between images and labels [1][2][3][4][5][6][7][8]. Despite its powerful discriminative ability, it cannot detect those visually hard-to-detect targets, such as small and blured objects.…”

Section: Introductionmentioning

confidence: 99%

Adaptive Attention Annotation Model: Optimizing the Prediction Path through Dependency Fusion

2019

KSII TIIS

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Previous methods build image annotation model by leveraging three basic dependencies: relations between image and label (image/label), between images (image/image) and between labels (label/label). Even though plenty of researches show that multiple dependencies can work jointly to improve annotation performance, different dependencies actually do not "work jointly" in their diagram, whose performance is largely depending on the result predicted by image/label section. To address this problem, we propose the adaptive attention annotation model (AAAM) to associate these dependencies with the prediction path, which is composed of a series of labels (tags) in the order they are detected. In particular, we optimize the prediction path by detecting the relevant labels from the easy-to-detect to the hard-to-detect, which are found using Binary Cross-Entropy (BCE) and Triplet Margin (TM) losses, respectively. Besides, in order to capture the inforamtion of each label, instead of explicitly extracting regional featutres, we propose the self-attention machanism to implicitly enhance the relevant region and restrain those irrelevant. To validate the effective of the model, we conduct experiments on three well-known public datasets, COCO 2014, IAPR TC-12 and NUSWIDE, and achieve better performance than the state-of-the-art methods.

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A Fair-Exchange E-Payment Protocol For Digital Products With Customer Unlinkability

Cited by 5 publications

References 26 publications

Elliptic curve based authenticated encryption scheme and its application for electronic payment system

Elliptic curve based authenticated encryption scheme and its application for electronic payment system

A secure and efficient authenticated encryption for electronic payment systems using elliptic curve cryptography

Adaptive Attention Annotation Model: Optimizing the Prediction Path through Dependency Fusion

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